Seal and swivel mounting



Oct. 7, 1952 J. R. sNYDER ET AL 2,613,057

SEAL AND SWIVEL MOUNTING Filed oct. 24, 1945 Patented Oct. 7, 1952 y2,613,057 SEAL AND1 `SWIVEL TMOUNTING l `Jacob uRushISnyderg'lCleveland," and -James Fred-` erick Norton, Cleveland Heights,Ohiogassignors to Thompson Products; Inc., Cleveland,y Ohio,acorporation of Ohio l ApplicationfOctober 24, 1945Se1fial No.624,2`42 IThisv vinvention relates vto mountings which swivellysupport one part insealedrelation to another part.

Specifically, the invention deals `with `a combinationseal and swivelmountingA for rotary plugtype iiuid lcontrol devices; such asV plugvalves.

In our copending application Serial No. 573,958 ledilanuaryz, 1945, nowPatent No."2,417,400 ofwhich the present application is acontinuation-in-part, there is disclosed and claimed a combinationy sealand gasket assembly 'especially adapted for simultaneously sealing theports in avalve body and for sealing nipplesin `fixed relation to thevalve body.

`The present invention now `provides a combination -seal and swivelmounting especially useful in fluidcontrol ldevices such as plug!y typeselectorV valves `or thelike wherein 'a' combinas tion seal `and gasketof the `type disclosed in` our 4parent application Serial No. 573,958above referred to, is utilized to seal the ports of the` valvev butwherein the `xed nipple ldisclosed `in theparentapplication is replacedwith Aa mounting block and cap assembly for swivelly supporting thenipple.` The mounting block isfren cessed inits outer `facette provide achamberf fo'r an 0 ring seal so that the nipple, although swivellymounted, will always be in sealed relationwith the block; The block, inturn, is always A in sealed relation with the valve body` through themedia 4of the gasket portion of the portseal.

The mounting block is also recessed on its `op-` i posite faceltoreceivea bead around the outer endof the gasket portion of the vport-seal` and is additionally recessed to receive a-movable` portion of theport seal adjacent the gasket portionof the seal for accommodatingmovement of the port seal.

It is, then, an object of the present invention to provide a combinationseal and swivel mounting for nipples of valves utilizing a gasket andport seal assembly of our parent application Serial No. 573,958 filedJanuary -22'J 1945. It is a `further object of this invention to provideawseal and swivel mounting :embodying a mounting block recessed on itsopposed "faces to accommodate different types of seals.

' A further object of this invention is to provide a seal and swivelassembly for the nipples of" selector valves or the like which serves'an additional function of 'securing a valve port seal in operativerelation to a valve housing.

`A specific object of this invention is to4 provide a swivel mountingfor' selector valves or other iiuidilow control devices which servesAdual* function of cooperating with a valve port` seal f anda valvenipple seal While holdingthe nipple* in swivel relationshipwith` thevalve body'.

A furtherspecid'object` of this invention fis' to providea sealed'swivel mounting'assembly* for `thelnipples of 'fluid flow controlvalves A still further specific object of` thisI invention istolprovideva swivel-` mounting `for *the nipples"I of' 'selectorvalves'or` the'likefluid ow control" devices vwhereby the Anipples canvreadily' be re-\ placed with other parts *suchy as `closure plugs or thelike, without disturbingthe port sealuof the valve.

Other and iurth'erobjects offthis `invention the following detailed*description1offthefan@ nexed` sheetfof drawingswhich",` by way of a=preferred v'example only, illustrates 'one renribodis` i ment of theinvention.` 1

Onthe drawings:

Figure l is a vertical=eross=sectional View; Awith 1 will beapparent tothoseskilledinl theart `from parts inelevation, and 'withpartsbrokenfaway;`

of a selector valve equipped with theseal land.' swivelmountin'gs ofthisuinvention; .l i

Figure 2"is an exploded lohgitudinalfcross sectional lView `of the parts`for the seal'` and:

swivel `mountings2fof this l invention illustrating the 4sequence in`which thev` parts "are assembled.`

Figure 3 is a planviewof themounting'block for the seal-` andswivelwmounting of' thisinverttion taken alongthe lineJII-#JII 'of`liigureLfZ As shown onthedrawingsz As shown* in Figurel the`referencelnumeral l El designates generally `a selector valve having' 1a body Il with a cylindricalfborevl laeilrtendirig` inwardly fromfthebottomface thereof -todene avalveeoperatingchamber `I2.A Thefbre -I I ais counterbored at I Ib"to provide af smaller diam-` eter `recess I3above the valveoperating chamber I2." Thisrecess I3 is topped by the topendwall Ile ofthe bodyll.

suitable compositions bearing ring |5`is` vseated The end wall I Ic is`centrally i apertured fat Ill.` i A graphitic f carbon1 or` other inthe recess I3 in snug seating engagementwith`1` the `wall ofthecounterbore l Ibi.'

A cover I1 is secured to the body I I` for closing the open end ofthebore I la. Bolts (not shownl The `bore IlaI secure `the cover to thebody II.

iscounterbored at I Id in the-mouth thereofy to` provide a recess for anO ring seal I8 to provide a `sealing gasket for the coverl'l.

The cover` I'I has a pilot portion I'Ia` projecting into theborej Ila ofthe body II. This pilot portion I'Ioten-H gagesthe 0 ringIB "in'seali'ngrelation therewith and has a recessed -central portion I'Ib receiving abearing ring 8 of the same composition as the ring I5 of smallerdiameter than the ring I5. 'I'he bearing ring 8 projects above the topof the cap Il into the central portion of the chamber I2. The cap has abore I'Ic of the same diameter as the inside diameter of the bearingring 8 extending from the bearing ring toa counterbored larger diameterouter end portion Hd. The counterbore I'Id, in turn, is furthercounterbored at Ile around the mouth thereof to provide a recess for anO ring seal I9. A nipple 23 has a tubular end portion 29a extending intothe counterbore I'ldY in sealing engagement with the engagement with the0 ring I 9.

A cap ring 2I is secured on the end face of the body by means of capscrews 22. The ring 2l has a bore 2 Ia therethrough counterbored at 2 Ibto receive the ange h of the nipple and provide a shoulder 2Ic overlyingthe flange for securing the nipple in swivel relationship with the capI'I. The O ring I9 will seal the nipple 20 to the cap I1 but will permitrotation of the nipple about its own axis relative to the cap.

A valve plug 23 is mounted in the operating chamber I2 of the casing Ilvon the bearings I5 and 8. Thus the plug 23 has a recess 23a in itsbottom face receiving the bearing ring 8 therein in bearing relationwith the side wall of the recess. The top of the plug 23. has a circularflange 23h projecting into the bearing ring I5 in bearing engagementtherewith.

The plug 23 is smaller than the bore IIa of the body Il and the bearingrings I5 and 8 hold the plug in spaced relation from the bore wall tofloat the plug in the body. The peripheral Wall of the plug thus Willnot become roughened or scratched by the body as it is rotated therein.

I'he plug 23 carries a spring-pressed pin P for selective seating inrecesses I'Ie in the cap Il to serve as a position finder and to holdthe plug in selected position. f

A shank portion or stem 23C of the plug 23 projects through the apertureI4 of the top wall Il b of the body and receives a yoke member 24thereon for driving attachment with a prime mover, an operating rod, ahandle, or the like (not shown). An O ring 25 surrounds the stem 23e inthe recess I3 of the body member Il and is bottomed by a washer 23. Thewasher 26 is spring-pressed by a spring 21 to urge the O ring 25 againstthe top wall IIc of the body for sealing the stem 23C of the plug toprevent leakage through the aperture I4.

The body I l has bores IIe in the side walls thereof providing portscommunicating with the operating chamber I2. Theplug valve 23 has anL-shaped passageway 28 therein extending through the side wall thereofand through the recess 23a thereof for selectively connecting the portsprovided by the bores I Ie with the passageway through the bearing ring8, bore I'Ic and nipple 20.

The ports provided by the bores Ile are equipped with gasket-type sealsdisclosed and claimed in our parent application Serial No.

' 573,958. These seals, as best shown in Figure 2,

include a rubber sleeve 30 with a tubular portion 30a, sized for snugsliding fit in the bore I Ie, and an outturned fiange 30h at one endthereof for overlying the side face of the body I I, to provide agasket.

The free end of the tubular portion 30a. has a its.

metal ring 3l embedded therein. This metal ring has a cylindricallyconcave or dished end face 3 la facing the free end face of the tubularportion and Icovered with the rubber of the tubular portion to providean active sealing end face 30C which is resiliently deformable but whichis rigidly backed by the rigid face 3Ia of the ring. The ring also hasan inwardly projecting ange 3Ib extending into the tubular portion 30aof the rubber member to provide an abutment for a coil spring 32 whichis compressed in the member 30 for urging the end face 30o thereofagainst the periphery of the plug 23.

In accordance with the present invention the flange or gasket-definingportion 30h of the seal member 30 has an axially outward extending bead30C around the periphery thereof. A mounting block 33 composed of metal,plastic. or other rigid material has a rst end face confronting the sidewall of the body Il recessed at 33a to receive the flange portion 30h ofthe seal member 3D and having an annular deeper recessed portion orgroove 33h receiving the bead 30e of the member 3Q, The mounting blockalso has a rounded groove or recess 33e in the bottom of the recess 33athereof positioned to receive that portion of the seal member 30adjacent the junc-l tion between the tubular portion 30a and the flange30D for accommodating outward movement of the tubular portion 30a in theevent of expansion thereof or variations in tolerance lim- As shown inFigure 1, the mouths of the bores Ile are rounded to accommodate inwardmovement of the tubular portion 30a of the seal member 30 in the eventof shrinkage of the member or variations in tolerance conditions. Thisarrangement provides a sliding seal which will always have its activeend face 30e in sealing engagement with the periphery of the plug valve23. The coil spring 32 is bottomed on the block 33 in the recessed endface 33a thereof adjacent the inner diameter of the groove 33c. Thus aat surface 33d on the bottom of the recess 33a is provided for abuttingthe outer end of the coil spring 32.

The block 33 has a stepped bore 33e therethrough with the smallest boreportion extending outwardly from the recessed face 33a thereof. The bore33e is counterbored at 33f and 33g to provide shouldered recesses. Therecess provided by the counterbore 33j is larger than the recessprovided by the bore 33e while the recess provided by the counterbore33g is larger than the recess provided by the counterbore 33j. Thecounterbore 33g extends inwardly from the flat end face of the blockopposite the recessed end face 33a.

As best shown in Figure 3, the block 33 has holes 33h therethrough indiametrically opposed position adjacent the outer diameter of the groove33h for receiving screws (not shown) to secure the block to the body II. The block has the recessed end face thereof confronting a flat sidewall of the body II and the screws inserted through the holes 33h willclamp the block to the body in sealed relation with the gasket portion30D of the seal member 30.

The block 33 also has holes 331' in the four corners thereof for apurpose to be hereinafter described.

An O ring 34 is seated in the recess provided by the counterbore 33g ofthe block 33.

A nipple 35 has a tubular portion 35a thereof projecting into thecounterbore 33j of the block in sealing relation with the O ring 34. Aflange 35h on the nipple overlles the face of the block around thecounterbore 33g thereof and is also in sealing engagement with the 0ring 34. The` outer end ofthe nipple has an outturned bead or flange`35o' therearound to receive thereover and retain thereon a hose, tube,i or the like (not shown).

A cap ring 36 having a bore 36a therethrough freely receiving thetubular portion of the nipple 35 is slipped over this portion. The bore36a is counterbored at 361) to receive the flange 35a of the nipple andto provide a shoulder 36C overlying the flange around the peripherylthereof. Cap screws 3'! are passed through holes 36d in the cap-,ring 36through the holes 33t' of the block 33 and are threaded into tappedholes (not shown) in the body l I to secure the cap ring to the block yand body. The nipple 35 can rotate about its own axis in the cap ring 36and the O ring 34 will not interfere with this rotation but it will atall times sealingly connect the interior of the nipple with the portprovided by the bore Ile 0f the valve body H. The cap ring 36 is readilyremovedfrom the body l l and mounting block 33 so that the nipple 35 canbe replaced with other appurtenances for the valve l0, such as a closureplug 38 shown in Figure 1. This plug 38 has a pilot portion 38aprojecting into the counportions slidable in the ports with active endfaces engaging the valve plug and gasket-defining iiange portionsoverlying outer faces of the valve body, the improvement of acombination seal and swivel mounting comprising a mounting block fixedlysecured to the valve body, said block having a recessed end facereceiving the gasketdefining flange portion of a seal, an axiallyextending bead around the periphery of said gasketof the valve body, theimprovement of an axially extending bead on the flange portion of thesealterbore 33f of the mounting block 33, This pilot portion 38a is ofthe same diameter as the tubular portion uI of the nipple 35. A fiange38h is provided on the closure plug 38 similar to the flange 35h on thenipple 35 so that the nipple and closure plug are interchangeable. Theclosure plug 38 is useful for sealing one of the ports provided by thebores lle of the valve body Il` Fluid can flow from a nipple 35 througha selected port provided by a bore Ile of the body into the nipple 20`and thence through the passageway V28 in the valve plug 23. The nipple35 can be positioned either asshown inFigure 1, or mounted in place ofthe closure plug 38. The valve thus has right and left-hand connectionsfor selective use as desired in particular installations.

The nipples 20 and 35 can each rotate about their own axes, can bereplaced with other appurtenances for the valve, and during suchreplacement operation the port seal and other operating parts of thevalve are not touched. The swivel movement of the nipples and otherappurtenances will not produce leakage because the O ring seals for thenipples and other ap-` purtenances accommodate swivel movement Withoutloss of efiiciency.

It will, of course, be understood that various details of constructionmay be varied through a wide range without departingfrom the principlesof this invention and it is, therefore, not the purpose to limit thepatent granted hereon other- Wise than necessitated by the scope of theappended claims.

We claim as our invention: i 1. In a plug valve of the type having avalve body, a rotary valve plug therein, a plurality of ports in saidvalve body and combination port seals and gaskets in said ports havingtubular ing sleeve, a mounting block xedly secured on the outer face ofthe valve body having a recessed end face receiving the flange portionof the sealing sleeve and a groove in the recessed end face i receivingthe bead on the flange portion.

3. In a rotary plug type valve having a port intersecting an end face ofthe valve, the improvement of a self-adjusting sealing sleeve in the Jvalve port and having a plug-engaging sealing surface on one end and agasket-forming flange on the other end overlying the end face, saidflange having an annular rib formed thereon,

f and a mounting block carried in rm assembly on the end face andengaging said flange to retain said sealing sleeve in permanent assemblyin said valve, said mounting block having an' annular recess receivingsaid rib on said ilange, said mounting block having additional recessmeans formed in concentric alignment with said annular recess toaccommodate adjusting movement of said sealing sleeve.

JACOB RUSH SNYDER.

JAMES FREDERICK NORTON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

